MAX5823_13 Datasheet, PDF (1/35 Pages) Maxim Integrated Products – Ultra-Small, Octal Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and IC Interface

EVALUATION KIT AVAILABLE
MAX5823/MAX5824/MAX5825
Ultra-Small, Octal Channel, 8-/10-/12-Bit Buffered
Output DACs with Internal Reference and I²C Interface
General Description
The MAX5823/MAX5824/MAX5825 8-channel, low-power,
8-/10-/12-bit, voltage-output digital-to-analog converters
(DACs) include output buffers and an internal 3ppm/°C
reference that is selectable to be 2.048V, 2.500V, or
4.096V. The MAX5823/MAX5824/MAX5825 accept a
wide supply voltage range of 2.7V to 5.5V with extremely
low power (6mW) consumption to accommodate most
low-voltage applications. A precision external reference
input allows rail-to-rail operation and presents a 100kI
(typ) load to an external reference.
The MAX5823/MAX5824/MAX5825 have an I²C-compatible,
2-wire interface that operates at clock rates up to
400kHz. The DAC output is buffered and has a low sup-
ply current of less than 250FA per channel and a low
offset error of Q0.5mV (typ). On power-up, the MAX5823/
MAX5824/MAX5825 reset the DAC outputs to zero or mid-
scale based on the status of M/Z logic input, providing
flexibility for a variety of control applications. The internal
reference is initially powered down to allow use of an
external reference. The MAX5823/MAX5824/MAX5825
allow simultaneous output updates using software LOAD
commands or the hardware load DAC logic input (LDAC).
The MAX5823/MAX5824/MAX5825 feature a watchdog
function which can be enabled to monitor the I/O inter-
face for activity and integrity.
A clear logic input (CLR) allows the contents of the CODE
and the DAC registers to be cleared asynchronously and
simultaneously sets the DAC outputs to the program-
mable default value. The MAX5823/MAX5824/MAX5825
are available in a 20-pin TSSOP and an ultra-small,
20-bump WLP package and are specified over the -40NC
to +125NC temperature range.
Applications
Programmable Voltage and Current Sources
Gain and Offset Adjustment
Automatic Tuning and Optical Control
Power Amplifier Control and Biasing
Process Control and Servo Loops
Portable Instrumentation
Benefits and Features
S Eight High-Accuracy DAC Channels
 12-Bit Accuracy Without Adjustment
 ±1 LSB INL Buffered Voltage Output
 Guaranteed Monotonic Over All Operating
Conditions
 Independent Mode Settings for Each DAC
S Three Precision Selectable Internal References
 2.048V, 2.500V, or 4.096V
S Internal Output Buffer
 Rail-to-Rail Operation with External Reference
 4.5µs Settling Time
 Outputs Directly Drive 2kI Loads
S Small 6.5mm x 4.4mm 20-Pin TSSOP or Ultra-
Small 2.5mm x 2.3mm 20-Bump WLP Package
S Wide 2.7V to 5.5V Supply Range
S Separate 1.8V to 5.5V V_DDIO Power-Supply Input
S Fast 400kHz I²C-Compatible, 2-Wire Serial
Interface
S Pin-Selectable Power-On-Reset to Zero-Scale or
Midscale DAC Output
S LDAC and CLR For Asynchronous DAC Control
S Three Software-Selectable Power-Down Output
Impedances
 1kI, 100kI, or High Impedance
Functional Diagram
VDDIO
VDD
REF
SCL
SDA
ADDR0
ADDR1
CLR
LDAC
IRQ
M/Z
I²C SERIAL
INTERFACE
WATCHDOG
TIMER
POR
INTERNAL REFERENCE/
EXTERNAL BUFFER
CODE
REGISTER
DAC
LATCH
8 -/10-/12-BIT
DAC
CODE
CLEAR /
RESET
LOAD
(GATE/
CLEAR /
RESET)
DAC CONTROL LOGIC
POWER-DOWN
GND
MAX5823
MAX5824
MAX5825
1 OF 8 DAC CHANNELS
BUFFER
100kI 1kI
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
For related parts and recommended products to use with this part,
refer to: www.maximintegrated.com/MAX5823.related
Ordering Information appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6185; Rev 2; 2/13